<?php if(!empty($this->top_article)):?>
    <a href="<?php echo $this->getUrl(array('id'=>$this->top_article[0]->getId()),'detail','content','article') ?>">
        <img src="<?php echo $this->top_article[0]->getFirstPicture() ?>" width="626" height="298" />
    </a>
<?php endif?>